Who said "My purpose here is unclear to me."?

This quote is attributed to Piranesi.

My purpose here is unclear to me. - Piranesi

"My purpose here is unclear to me."

Piranesi Life

Character in Piranesi

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"I am afraid that I do not know who I am."

"I have always lived in the House."

"The tides bring messages from the Other."

"I am not entirely alone here."

"Life is meant to be lived with passion."

"Life is what happens when you're busy making other plans."

"Life is a journey, not a destination."

"Life's too short for regrets."